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Peripheral blood morphology

Alondra Escudero-Castellanos, Blanca E Ocampo-García, Ma Victoria Domínguez-García, Jaime Flores-Estrada, Miriam V Flores-Merino
Hydrogels are suitable materials to promote cell proliferation and tissue support because of their hydrophilic nature, porous structure and sticky properties. However, hydrogel synthesis involves the addition of additives that can increase the risk of inducing cytotoxicity. Sterilization is a critical process for hydrogel clinical use as a proper scaffold for tissue engineering. In this study, poly(ethylene glycol) (PEG), poly(ethylene glycol)-chitosan (PEG-CH) and multi-arm PEG hydrogels were synthesized by free radical polymerization and sterilized by gamma irradiation or disinfected using 70 % ethanol...
December 2016: Journal of Materials Science. Materials in Medicine
Francesca T Cannizzo, Sara Pegolo, Paola Pregel, Elisabetta Manuali, Sonia Salamida, Sara Divari, Frine E Scaglione, Enrico Bollo, Bartolomeo Biolatti, Luca Bargelloni
In livestock production corticosteroids are licensed only for therapy, nevertheless they are often illegally used as growth promoters. The aim of this study was to identify morphological or biomolecular alterations induced by prednisolone (PDN) in experimentally treated beef cattle, since PDN and its metabolites are no longer detectable by LC-MS/MS methods in biological fluids. Moreover, PDN do not induce any histological alterations in thymus, differently from Dexamethasone treatments. Therefore, a marker of illicit treatment for this growth promoter could be useful...
October 14, 2016: Journal of Agricultural and Food Chemistry
Suchismita Daw, Ritam Chatterjee, Aditya Law, Sujata Law
Hematological disorders like myelodysplastic syndrome (MDS) may arise due to cumulative dysregulation of various signalling pathways controlling proliferation, differentiation, maturation and apoptosis of bone marrow cells. This devastating bone marrow condition can be due to consequential abnormalities in haematopoiesis as well as its supportive microenvironment. Although mutations related to JAK/STAT pathway are common in myeloproliferative neoplasms, further studies are required to fully explore the myelodysplastic scenario regarding the concerned pathway...
October 7, 2016: Chemico-biological Interactions
Prithal Gangadhar, Zulfikar Ahmed, Muktha R Pai, I Sandhya
Plasma cell leukemia (PCL) is a rare and aggressive variant of myeloma accounting for 2-3% of all plasma cell dyscrasias characterized by the presence of circulating plasma cells. The diagnosis is based on the % (≥20%) and absolute number (≥2x10 9 /L) of plasma cells in the peripheral blood. The incidence of primary PCL (pPCL) is very rare and reported to occur in <1 in a million. It is classified as either pPCL occurring at diagnosis or as secondary PCL in patients with relapsed/refractory myeloma. pPCL is a distinct clinicopathological entity with different cytogenetic and molecular findings...
October 2016: Indian Journal of Pathology & Microbiology
Natalia I Chekalina, Yuri M Kazakov, Tatyana V Mamontova, Ludmila E Vesnina, Igor P Kaidashev
INTRODUCTION: endothelial dysfunction (ED) is one of the most important links in the pathogenesis of atherosclerosis (ASVD) - morphological basis of coronary artery disease (CAD). OBJECTIVE: to study the effect of polyphenolic antioxidants, resveratrol and quercetin, on endothelial degeneration factors in CAD patients. MATERIALS AND METHODS: the study involved 93 patients with coronary artery disease: stable angina pectoris, FC II. The cytofluorometric technique was applied to define the level of circulating endothelial microparticles (EMP) CD32+CD40+ in peripheral blood in order to identify ED...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
Giovanni Nardo, Maria Chiara Trolese, Giuseppe de Vito, Roberta Cecchi, Nilo Riva, Giorgia Dina, Paul R Heath, Angelo Quattrini, Pamela J Shaw, Vincenzo Piazza, Caterina Bendotti
BACKGROUND: Increasing evidence suggests that the immune system has a beneficial role in the progression of amyotrophic lateral sclerosis (ALS) although the mechanism remains unclear. Recently, we demonstrated that motor neurons (MNs) of C57SOD1(G93A) mice with slow disease progression activate molecules classically involved in the cross-talk with the immune system. This happens a lot less in 129SvSOD1(G93A) mice which, while expressing the same amount of transgene, had faster disease progression and earlier axonal damage...
October 7, 2016: Journal of Neuroinflammation
Keiichi Sato, Aika Yamawaki-Ogata, Isamu Kanemoto, Akihiko Usui, Yuji Narita
The aim of this study was to isolate mesenchymal stem cells (MSCs) from feline peripheral blood (fPB-MSCs) and to characterise the cells' in vitro properties. The mononuclear cell fractions were isolated from venous blood of cats by density gradient centrifugation and cultured on plastic dishes under various culture conditions to isolate MSCs. When these cells were cultured with 5% autologous plasma (AP) and 10% foetal bovine serum (FBS), adherent spindle shaped fibroblast-like cells (fPB-MSCs) were obtained from 15/22 (68%) cats...
October 2016: Veterinary Journal
Takahiro Tanahashi, Nodoka Sekiguchi, Kazuyuki Matsuda, Akihiro Matsumoto, Toshiro Ito, Hideyuki Nakazawa, Fumihiro Ishida
Large granular lymphocyte leukemia (LGL-L) is defined morphologically as a group of lymphoproliferative disorders, including T-cell large granular lymphocytic leukemia (T-LGL-L), chronic lymphoproliferative disorders of NK cells (CLPD-NK), and aggressive NK cell leukemia. We investigated the morphological features of LGL leukemic cells in LGL-L patients to identify screening methods best suited to application in daily clinical practice. LGL leukemic cells were mostly indistinguishable from normal LGL; however, we developed a simplified approach to distinguishing among these cells, in which lymphocyte  % and the proportion of granular lymphocytes among lymphocytes (GL %) can serve as parameters at the cut-off values of 52 and 50 %, respectively...
September 29, 2016: International Journal of Hematology
Daniel F Boyer
Evaluation of peripheral blood and bone marrow for an indication of persistent eosinophilia can be a challenging task because there are many causes of eosinophilia and the morphologic differences between reactive and neoplastic causes are often subtle or lack specificity. The purpose of this review is to provide an overview of the differential diagnosis for eosinophilia, to recommend specific steps for the pathologist evaluating blood and bone marrow, and to emphasize 2 important causes of eosinophilia that require specific ancillary tests for diagnosis: myeloproliferative neoplasm with PDGFRA rearrangement and lymphocyte-variant hypereosinophilic syndrome...
October 2016: Archives of Pathology & Laboratory Medicine
Claire Dossier, Agnès Jamin, Georges Deschênes
Steroid sensitive nephrotic syndrome is marked by a massive proteinuria and loss of podocytes foot processes. The mechanism of the disease remains debated but recent publications suggest a primary role of EBV. EBV replication in the peripheral blood is found in 50% of patients during the first flare of the disease. The genetic locus of steroid sensitive nephrotic syndrome was also identified as influencing antibodies directed against EBNA1. EBV is able to establish, latent benign infection in memory B cells that display phenotypes similar to antigen-selected memory B cells...
September 28, 2016: Pediatric Research
R Barigye, S Davis, R Hunt, N Hunt, S Walsh, N Elliott, C Burnup, S Aumann, C Day, K Dyrting, R Weir, L F Melville
OBJECTIVE: This study assessed the neurotropism of bovine ephemeral fever (BEF) virus (BEFV) and described histomorphological abnormalities of the brain, spinal cord and peripheral nerves that may causally contribute to paresis or paralysis in BEF. METHODS: Four paralysed and six asymptomatic but virus-infected cattle were monitored, and blood and serum samples screened by qRT-PCR, virus isolation and neutralisation tests. Fresh brain, spinal cord, peripheral nerve and other tissues were qRT-PCR-tested for viral RNA, while formalin-fixed specimens were processed routinely and immunohistochemically evaluated for histomorphological abnormalities and viral antigen distribution, respectively...
October 2016: Australian Veterinary Journal
Xiaoyu An, Jinping Liu, Na Wang, Di Wang, Liang Huang, Likun Zhang, Jie Cai, Jean-Pierre Wery, Demin Zhou, Jianfeng Zhou, Qi-Xiang Li
Engrafting a M5-AML patient bone marrow (BM) cells into immunocompromised mice (AM7577) achieved serially transferrable stable AML and eventual mortality. The disease starts at BM followed by expansion to peripherals, typical of M5 leukemogenesis, where high leukemic burden in blood is coincident with symptoms/mortality. The leukemic cells in mice have similar myeloid morphology, phenotypes and genotypes (including FLT3-ITD) as the original patient. Autocrine mechanisms of human GM-CSF/IL-3 likely support AM7577 growth in mice...
September 23, 2016: Experimental Hematology
Ashley N Sharpe, Wen J Seeto, Randolph L Winter, Qiao Zhong, Elizabeth A Lipke, Anne A Wooldridge
OBJECTIVE To evaluate optimal isolation of endothelial colony-forming cells (ECFCs) from peripheral blood of horses. SAMPLE Jugular and cephalic venous blood samples from 17 adult horses. PROCEDURES Each blood sample was divided; isolation was performed with whole blood adherence (WBA) and density gradient centrifugation (DGC). Isolated cells were characterized by uptake of 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate-labeled acetylated low-density lipoprotein (DiI-Ac-LDL), vascular tubule formation, and expression of endothelial (CD34, CD105, vascular endothelial growth factor receptor-2, and von Willebrand factor) and hematopoietic (CD14) cell markers by use of indirect immunofluorescence assay (IFA) and flow cytometry...
October 2016: American Journal of Veterinary Research
Omar Niss, Satheesh Chonat, Neha Dagaonkar, Marya O Almansoori, Karol Kerr, Zora R Rogers, Patrick T McGann, Maa-Ohui Quarmyne, Mary Risinger, Kejian Zhang, Theodosia A Kalfa
Hereditary elliptocytosis (HE) and hereditary pyropoikilocytosis (HPP) are heterogeneous red blood cell (RBC) membrane disorders that result from mutations in the genes encoding α-spectrin (SPTA1), β-spectrin (SPTB), or protein 4.1R (EPB41). The resulting defects alter the horizontal cytoskeletal associations and affect RBC membrane stability and deformability causing shortened RBC survival. The clinical diagnosis of HE and HPP relies on identifying characteristic RBC morphology on peripheral blood smear and specific membrane biomechanical properties using osmotic gradient ektacytometry...
October 2016: Blood Cells, Molecules & Diseases
Policarp Hortolà
Apart from their forensic significance in crime investigation, human bloodstains have an anthropological interest due to their occurrence on certain traditional weapons and ritual objects. Previously, a guiding study of erythrocytes in experimental samples including domestic sheep (Ovis aries) tibia was carried out using a scanning electron microscope (SEM). Here, a comparative SEM study to reveal the potential differences in bloodstain surface morphology as a function of intra-sample (smear region) and inter-sample (individual smear, smearing mechanism, bone origin) parameters is reported...
November 2016: Micron: the International Research and Review Journal for Microscopy
Yuli Zhu, Huaishan Wang, Yi Xu, Yu Hu, Hui Chen, Lianxian Cui, Jianmin Zhang, Wei He
Circulating γδ T cells in healthy individuals rapidly respond to bacterial and viral pathogens. Many studies have demonstrated that γδ T cells are activated and expanded by Listeria monocytogenes (L.monocytogenes), a foodborne bacterial pathogen with high fatality rates. However, the roles of γδ T cells during L.monocytogenes infection are not clear. In the present study, we characterized the morphological characteristics of phagocytosis in γδ T cells after L.monocytogenes infection using transmission electron microscopy...
September 19, 2016: Molecular Medicine
Jessica Campos-Delgado, Kelly L S Castro, Jose G Munguia-Lopez, Ana K González, Martin E Mendoza, Benjamin Fragneaud, Raphael Verdan, Joyce R Araujo, Francisco J González, Hugo Navarro-Contreras, Ivan N Pérez-Maldonado, Antonio de León-Rodríguez, Carlos A Achete
BACKGROUND: Driven by the potential biological applications of graphene, many groups have studied the response of cells exposed to graphene oxide (GO). In particular, investigations of bacteria indicate that there are 2 crucial parameters, which so far have only been investigated separately: GO size and exposure methodology. Our study took into account both parameters. We carefully characterized the samples to catalog sizes and structural properties, and tested different exposure methodologies: exposure in saline solution and in the presence of growth media...
September 7, 2016: Journal of Applied Biomaterials & Functional Materials
Eman Al Mussaed, Hani Osman, Ghaleb Elyamany
BACKGROUND: The simultaneous Occurrence of chronic lymphocytic leukemia (CLL) and acute myeloid leukemia (AML) has been rarely reported. Most of these cases have been occurring more frequently as a secondary event in patients receiving chemotherapeutic agents for CLL. CASE PRESENTATION: We describe a case of a 77-year-old man who presented with fatigue, pallor and lower limb pain and weakness. Initial laboratory studies showed Hb 7.7 g/dl, WBC 279.6 × 10(9)/1, PLT 143× 10(9)/1...
2016: BMC Cancer
Zhen-Kui Wang, Li Xue, Tao Wang, Xiu-Jie Wang, Zhi-Qiang Su
Invariant natural killer T (iNKT) cells are a unique subset of T cells that have been implicated in inflammation, atopy, autoimmunity, infections, and cancer. Although iNKT cells have been extensively studied over the past decade, its role in the pathogenesis of ischemic brain injury is still largely unknown. In our study, we determined whether iNKT cells infiltration occur in a mouse model of permanent cerebral ischemia. C57BL6/J male mice were treated with either alpha-galactosylceramide (α-GalCer) or vehicle control before undergoing permanent middle cerebral artery occlusion (pMCAO)...
September 13, 2016: Neuroscience Letters
Nicolas J Pillon, Kenny L Chan, Shitian Zhang, Marios Mejdani, Maya R Jacobson, Alexandre Ducos, Philip J Bilan, Wenyan Niu, Amira Klip
Obesity is associated with metabolic tissue infiltration by monocyte-derived macrophages. Saturated fatty acids contribute to pro-inflammatory gene induction in tissue-embedded immune cells. However, it is unknown how circulating monocytes -the macrophage precursors- react to high fat environments. In macrophages, saturated fatty acids activate inflammatory pathways and, notably, prime caspase-associated inflammasomes. Inflammasome-activated IL1β contributes to type 2 diabetes. We hypothesized that a) human monocytes from obese patients show caspase activation, and b) fatty acids trigger this response and consequent release of IL1β/IL18...
September 13, 2016: American Journal of Physiology. Endocrinology and Metabolism
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